Invite all post likers to like Facebook page Firefox

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manifest.json
{
  "manifest_version": 2,
  "name": "Invite all post likers to like Facebook page",
  "description": "Invite everyone who liked your post to like your page on Facebook.",
  "version": "3.4",
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage",
    "tabs",
    "https://*.facebook.com/*",
    "http://localhost/apps/Likeinviter_nette/LikeInviter/www/user/login"
  ],
  "content_security_policy": "script-src 'self' https://www.google-analytics.com/analytics.js; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{6098b095-4a30-4b2c-81ce-24d814cb06e5}"
    }
  }
}

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